404 REPORT OF COMMISSIONER OF FISH AND FISHERIES. 



Anisotrenius, aud Pomadasia. In a few species these markings persist 

 (luring life. The species are all essentially alike in resjx'ct to the pores 

 at the chin, the height and form of the soft dorsal, tlie lorni of the 

 nostrils, the squaniation of the fins, the direction of the lateral line, etc. 

 These common characters are, therefore, not mentioned in the following 

 descriptions. Tlie peritoneum is black in all species examined. 



In the descriptions below the scales above the lateral line are counted 

 vertically from the first dorsal spine to the lateral line; those below the 

 lateral line from the first anal sj)ine obliquely upward and forward to 

 the lateral line. The scales in a longitudinal series are, as here given, 

 the number of vertical rows above the lateral line from head to base of 

 caudal. This number is practically the same in all species of the genus, 

 the variations above or below 50 being very slight. The number of 

 oblique series of scales or of pores in the lateral line is in all cases 

 about 10 fewer, or about 40. 



ANALYSIS OF SPECIES OF H^MULON. 



a. Scales above lateral line arranged in very oblique series, not parallel with the 



lateral line. 

 b. Jaws 8ube<iual, or the lower included; mouth little oblique; gill-rakers compar- 

 atively few and short, 

 c. Dorsal spines 12 (sometimes 11 in U. scnddei-i); scales large; gill-rakers few 



and small (10 to 14 on lower jiart of an- 

 terior arch); frontal foramen a single or 

 divided slit at the base of the high supra- 

 occipital crest in front. 

 d. Mouth moderate or large, its cleft more than ^length of head; back more or 



less elevated; second anal spine strong, 

 notably longer than third. (Hamulon.) 

 c. Scales below lateral line anteriorly not especially enlarged. 

 /. Scales above lateral line anteriorly not much enlarged. 



g. Maxillary 2^ to 2| in head, not reaching center of eye (in adult). 

 h. Back aud sides withiuit yellow or blue stripes; each scale above 

 with a median blackish spot, these form- 

 ing undulating lines (spots rarely obsolete 

 in atlult, obscure or wanting in young); 

 maxillary 2k to 2f in head, 

 i. Scales in a vertical row from first dorsal spine to lateral line 7 or 

 8 (9 in oblique series). 

 j. Mouth rathei' small, maxillary scarcely reaching to front of eye; 

 back elevated; preorbital very deep, its 

 least breadth greater than length of eye 

 in adult, 4^ to 4^^ in head in young; second 

 anal s])inc not reaching to tip of last ray ; 

 STiout long and pointed, 2j- to 2J in bead. 

 k. Sides with a'lout six dark vertical bars; sides of head with 

 blackish spots lik(! those of body; doi'sal 

 spines not graduated; 2d anal spine when 

 depressed not reaching tip of last spine. 

 Head, H; depth, 2f. Scales, 7-51-14. D. 

 XII, 17; A. Ill, 1> Sexfasciatum, 33. 



